Naslov
Synthesis of poly(acrylamide)-starch as a potential size base material In sizing of yarns for weaving

Autori
Djordjevic, Suzana ; Nikolic, Ljubiša ; Kovacevic, Stana ; Djordjevic, Dragan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Society of Chemists and Technologists of Macedonia, Book of Absracts / (G. Nacevski) - Skopje : Nacionalna i univerzitetska biblioteka, Kliment Oxridski, 2012, 340-340

ISBN
978-9989-760-11-2

Skup
XXII Congress of chemists and technologists of Macedonia

Mjesto i datum
Ohrid, Sjeverna Makedonija, 05.09.2012. - 09.09.2012

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
starch; acrylamide; grafting; chromatography; molar mass; sizing; yams.

Sažetak
Potato starch was hydrolyzed with HCI to obtain starch with different molecular weights. Different concentrations of acrylamide were grafted onto hydrolyzed starches in the presence of potassium permanganate/citric acid as an initiator. The newly synthesized products were used as sizing agents of cotton yams to test their suitability for temporary improvement of physico-mechanical properties. With the increase of the potassium permanganate concentration the graft yield of copolymerization increased and then drop off ; (b) increased by increasing the acrylamide concentration within the range studied. The molecular weights of copolymers were investigated by high-performance liquid chromatography (HPLC). Mean molar mass and molar mass distributions were determined by gel permeability chromatography Agilent 1100 Series GPC where the detector is used as a differential refractometer (RID detector) 1200 Series. After chromatography of an appropriate sample of copolymer, depending on the used detector (RID or DAD), ChemStation software depending (RID or DAD) provides the corresponding chromatograms with typical chromatographic parameters. The program enables the activation of GPC software and transfer data obtained chromatograms for processing and analysis of molecular weight of each separated fraction of the analyzed polymers. It was found that the molecular weight of the grafted starch directly affects the rheology and the behavior of the solution (sizing agent), the efficiency of the process of sizing the yarn and then the safety and reliability of the process of weaving. On the other hand, physico-mechanical properties of cotton textiles, such as tensile strength, elongation at break and abrasion resistance, were found to be highly enhanced with the copolymers derived from hydrolyzed starches used as size base materials: while worse textile properties were found when the original starch was used as a sizing agent.

Izvorni jezik
Engleski

Znanstvena područja
Tekstilna tehnologija

POVEZANOST RADA